Meteor application not working after configuring Nginx with SSL - node.js

Question

I've deployed a Meteor application with Passenger integrated with Nginx(following this documentation). The application was running fine unless I configured Nginx for SSL with Lets Encrypt following this documentation.
After applying SSL the visiting the application shows the welcome page of nginx with https.
I've tried:
removed root /var/www/html;, replaced root <meteor directory>/bundle/programs/webserver;
Can anybody tell how to point my domain to the deployed meteor application?
My /etc/nginx/sites-enable/default file looks like:
server {
listen 80 ;
listen [::]:80;
# SSL configuration
listen 443 ssl;
listen [::]:443 ssl;
server_name example.com;
#return 301 https://$server_name$request_uri;
include snippets/ssl-example.com.conf;
include snippets/ssl-params.conf;
location / {
# First attempt to serve request as file, then
# as directory, then fall back to displaying a 404.
try_files $uri $uri/ =404;
}
location ~ /.well-known {
allow all;
}
}
And the /etc/nginx/example.conf looks like bellow:
server {
listen 80;
server_name example.com;
# Tell Nginx and Passenger where your app's 'public' directory is
root /var/www/example/bundle/public;
# Turn on Passenger
passenger_enabled on;
# Tell Passenger that your app is a Meteor app
passenger_app_type node;
passenger_startup_file main.js;
# Tell your app where MongoDB is
passenger_env_var MONGO_URL mongodb://<user>:<password#<host>:<port>/dbName;
passenger_env_var ROOT_URL http://example.com;
}
Here is the exact configuration of nginx (nginx -T)
nginx: [warn] conflicting server name "example.com" on 0.0.0.0:80, ignored
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
# configuration file /etc/nginx/nginx.conf:
user www-data;
worker_processes auto;
pid /run/nginx.pid;
events {
worker_connections 768;
# multi_accept on;
}
http {
##
# Basic Settings
##
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
# server_tokens off;
# server_names_hash_bucket_size 64;
# server_name_in_redirect off;
include /etc/nginx/mime.types;
default_type application/octet-stream;
##
# SSL Settings
##
ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
ssl_prefer_server_ciphers on;
##
# Logging Settings
##
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
##
# Gzip Settings
##
gzip on;
gzip_disable "msie6";
# gzip_vary on;
# gzip_proxied any;
# gzip_comp_level 6;
# gzip_buffers 16 8k;
# gzip_http_version 1.1;
# gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
##
# Phusion Passenger config
##
# Uncomment it if you installed passenger or passenger-enterprise
##
include /etc/nginx/passenger.conf;
##
# Virtual Host Configs
##
include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;
}
# configuration file /etc/nginx/mime.types:
types {
text/html html htm shtml;
text/css css;
text/xml xml;
image/gif gif;
image/jpeg jpeg jpg;
application/javascript js;
application/atom+xml atom;
application/rss+xml rss;
text/mathml mml;
text/plain txt;
text/vnd.sun.j2me.app-descriptor jad;
text/vnd.wap.wml wml;
text/x-component htc;
image/png png;
image/tiff tif tiff;
image/vnd.wap.wbmp wbmp;
image/x-icon ico;
image/x-jng jng;
image/x-ms-bmp bmp;
image/svg+xml svg svgz;
image/webp webp;
application/font-woff woff;
application/java-archive jar war ear;
application/json json;
application/mac-binhex40 hqx;
application/msword doc;
application/pdf pdf;
application/postscript ps eps ai;
application/rtf rtf;
application/vnd.apple.mpegurl m3u8;
application/vnd.ms-excel xls;
application/vnd.ms-fontobject eot;
application/vnd.ms-powerpoint ppt;
application/vnd.wap.wmlc wmlc;
application/vnd.google-earth.kml+xml kml;
application/vnd.google-earth.kmz kmz;
application/x-7z-compressed 7z;
application/x-cocoa cco;
application/x-java-archive-diff jardiff;
application/x-java-jnlp-file jnlp;
application/x-makeself run;
application/x-perl pl pm;
application/x-pilot prc pdb;
application/x-rar-compressed rar;
application/x-redhat-package-manager rpm;
application/x-sea sea;
application/x-shockwave-flash swf;
application/x-stuffit sit;
application/x-tcl tcl tk;
application/x-x509-ca-cert der pem crt;
application/x-xpinstall xpi;
application/xhtml+xml xhtml;
application/xspf+xml xspf;
application/zip zip;
application/octet-stream bin exe dll;
application/octet-stream deb;
application/octet-stream dmg;
application/octet-stream iso img;
application/octet-stream msi msp msm;
application/vnd.openxmlformats-officedocument.wordprocessingml.document docx;
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet xlsx;
application/vnd.openxmlformats-officedocument.presentationml.presentation pptx;
audio/midi mid midi kar;
audio/mpeg mp3;
audio/ogg ogg;
audio/x-m4a m4a;
audio/x-realaudio ra;
video/3gpp 3gpp 3gp;
video/mp2t ts;
video/mp4 mp4;
video/mpeg mpeg mpg;
video/quicktime mov;
video/webm webm;
video/x-flv flv;
video/x-m4v m4v;
video/x-mng mng;
video/x-ms-asf asx asf;
video/x-ms-wmv wmv;
video/x-msvideo avi;
}
# configuration file /etc/nginx/passenger.conf:
passenger_root /usr/lib/ruby/vendor_ruby/phusion_passenger/locations.ini;
passenger_ruby /usr/bin/passenger_free_ruby;
# configuration file /etc/nginx/sites-enabled/default:
##
# You should look at the following URL's in order to grasp a solid understanding
# of Nginx configuration files in order to fully unleash the power of Nginx.
# http://wiki.nginx.org/Pitfalls
# http://wiki.nginx.org/QuickStart
# http://wiki.nginx.org/Configuration
#
# Generally, you will want to move this file somewhere, and start with a clean
# file but keep this around for reference. Or just disable in sites-enabled.
#
# Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
##
# Default server configuration
#
server {
listen 80 ;
listen [::]:80;
# SSL configuration
listen 443 ssl;
listen [::]:443 ssl;
# Add index.php to the list if you are using PHP
#index index.html index.htm index.nginx-debian.html;
server_name example.com;
#return 301 https://$server_name$request_uri;
include snippets/ssl-example.com.conf;
include snippets/ssl-params.conf;
location / {
# First attempt to serve request as file, then
# as directory, then fall back to displaying a 404.
try_files $uri $uri/ =404;
}
location ~ /.well-known {
allow all;
}
}
# configuration file /etc/nginx/snippets/ssl-example.com.conf:
ssl_certificate /etc/letsencrypt/live/example.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
# configuration file /etc/nginx/snippets/ssl-params.conf:
# from https://cipherli.st/
# and https://raymii.org/s/tutorials/Strong_SSL_Security_On_nginx.html
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_ciphers "EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH";
ssl_ecdh_curve secp384r1;
ssl_session_cache shared:SSL:10m;
ssl_session_tickets off;
ssl_stapling on;
ssl_stapling_verify on;
resolver 8.8.8.8 8.8.4.4 valid=300s;
resolver_timeout 5s;
# Disable preloading HSTS for now. You can use the commented out header line that includes
# the "preload" directive if you understand the implications.
#add_header Strict-Transport-Security "max-age=63072000; includeSubdomains; preload";
add_header Strict-Transport-Security "max-age=63072000; includeSubdomains";
add_header X-Frame-Options DENY;
add_header X-Content-Type-Options nosniff;
ssl_dhparam /etc/ssl/certs/dhparam.pem;
# configuration file /etc/nginx/sites-enabled/example.conf:
server {
listen 80;
server_name example.com;
# Tell Nginx and Passenger where your app's 'public' directory is
root /var/www/example/bundle/public;
# Turn on Passenger
passenger_enabled on;
# Tell Passenger that your app is a Meteor app
passenger_app_type node;
passenger_startup_file main.js;
# Tell your app where MongoDB is
passenger_env_var MONGO_URL connection_string;
# Tell your app what its root URL is
passenger_env_var ROOT_URL http://example.com;
#passenger_env_var ROOT_URL http://www.example.com;
}

Answer 1

The problem is that one tutorial tells you to edit default and the other tutorial tells you to create example.conf.
In fact they are both referring to the same file, and what you call it is irrelevant.
At the moment you have you configuration split across two files, with two server_name example.com; which is confusing nginx.
Decide which filename to use, and remove the other one. Combine the passenger and Let's Encrypt configuration into one file.
For example:
server {
listen 80 ;
listen [::]:80;
# SSL configuration
listen 443 ssl;
listen [::]:443 ssl;
server_name example.com;
include snippets/ssl-example.com.conf;
include snippets/ssl-params.conf;
location ~ /.well-known {
root /path/to/ssl/bits;
allow all;
}
root /var/www/example/bundle/public;
...
}